AHMED, M.; ZAHIR, K. M.; KAYESH, A. J. M. E.; KHAN, S. M. F. R.; HOSEN, M. S.; HOSSAIN, A.; BANNA, M. H. Sufferings of Covid 19 positive patients regarding major symptoms: A prospective observational study. Medico Research Chronicles, v. 8, n. 3, p. 295-302, 30 Jun. 2021.